The bracelet should have been an ornament, but it was only before smart technology opened its door. Now it is trying to record a series of relevant data such as the user's fitness effect, sleep quality, eating arrangement and habits, and can synchronize these data to the user's mobile terminal device. The terminal device may give relevant suggestions according to its "analysis function" to guide a healthy life through data. It can be said to be a high-grade pedometer, which has the functions of general pedometer and measuring distance, heat and fat. At the same time, it also has special functions such as sleep monitoring, high-grade waterproof, Bluetooth 4.0 data transmission, fatigue reminder and so on.

As a wearable device, smart bracelets often look cool. The design style of smart bracelet is quite attractive for users who are used to wearing jewelry. The small smart bracelet is small, and its function is relatively powerful. Its development involves a series of development, such as the transmission of MCU data instructions to Bluetooth IC , the data communication protocol from Bluetooth to app, the implementation of communication debugging logic from app to mobile phone, and the database algorithm design from app data to cloud server.

Taking sleeping as an example, set the bracelet to sleep mode before going to bed, and synchronize it with the smartphone in real time through low-power Bluetooth, you can see the information such as sleep time, wake time, deep / light sleep, overall sleep quality and so on. For people who lose weight and keep fit, the smart bracelet is a responsible personal trainer, which can tell users the daily exercise path, calorie consumption and calorie intake; You can set exercise goals, such as how many steps to take, how many calories to burn, and display the completion rate of exercise in real time. Exercise weight loss can be quantified, which is a great gospel for those who can't stick to it. The smart bracelet has high-grade waterproof function. It can wear the bracelet to swim in shallow water or river. It overcomes the defect that the traditional pedometer can not track the swimming movement, and is more widely used.

Functions of smart Bracelet

Step counting function
With the development and progress of wearable technology, wearable devices will calculate the number of steps by implanting bumps in the future, and then eliminate the wrong counting according to certain principles to obtain the final result.

Heart rate monitoring
The reflective photoelectric sensor is used to collect photoelectric signals to monitor and calculate the changes of pulse blood volume, and then the basic parameters reflecting human heart rate are calculated according to the relationship between the absorbance of substances in the blood and the concentration.

Temperature detection
The change of temperature is converted into the change of resistance value by thermistor, and then the resistance value is converted into voltage by corresponding measuring circuit, and then the voltage value is converted into digital signal, and then the temperature value can be obtained by corresponding processing of digital signal.

Energy consumption and sleep monitoring
By touching the wrist, the sensor monitors people's movement, heart rate and body movement frequency, and calculates and obtains the subject's sleep status and energy consumption. Different products have different algorithms.

Synchronization mode
The smart Bracelet still cannot get rid of its dependence on the end hardware and software. After all, after collecting a large amount of data, we also need to synchronize the data with the corresponding app of the bracelet in order to realize the permanent recording and analysis function. Therefore, whether the synchronization mode between the smart bracelet and the mobile phone or computer is convenient enough is also a major factor affecting the user experience.

Network function
The smart bracelet also has the function of social network sharing. For example, users can share sleep quality, diet, exercise and mood records through binding applications. For the elderly, it is also a patron saint. Through the built-in GPS connector, it can inform the relevant hospital or family at any time of its physical condition and location.

Smart bracelet is a wearable smart device. Through this bracelet, users can record real-time data such as exercise, sleep and diet in daily life, and synchronize these data with IOS or Android devices to guide healthy life through data.

Precautions for smart watch selection

1. What are you going to do with a smart watch?
Obviously, when we buy a smart watch, we don't just use it to see time, because if there is only this demand, the traditional mechanical watch will be a better choice. Therefore, we need to be clear about what we want it to do.
In terms of smart watch products in the current market, smart watches are usually divided into two categories: health data monitoring and all-round intelligent experience. Health data monitoring usually has the monitoring functions of heart rate, step count and calorie consumption. When selecting this kind of product, we must clearly understand what we need and what it can bring us.

The all-round intelligent experience watches pay more attention to the application experience on the wrist. For example, the apple watch plays the role of the second screen of the iPhone and alleviates the battery life problem of the iPhone. Of course, the endurance of such products will be shorter than that of other smart watches.sport watches.

2. What kind of smart watch do you like?
After determining our needs, we need to choose our favorite one from a large number of smart watch products with different design styles, such as whether the dial is round or square, and whether the dial material is metal or plastic. Of course, we also need to consider the collocation of the strap.In fact, there is no obvious difference between this process and buying clothes on the street. After determining the type you want to buy, of course, you should choose your favorite product as much as possible.

3. Which platform are you used to using?
We all know that a smart watch will get a better use experience if it is configured with its own smart phone. So the question is, which platform is your mobile phone now? Do you plan to change a mobile phone and an operating platform for the new smart watch?

At present, apple watch, Google Android and pebble are relatively mainstream smart watch platforms, which have different characteristics in system experience and compatibility, but also have some deficiencies.

Apple watch is excellent in fuselage design and functional experience, but the 18 hour battery life is obviously unsatisfactory, and the watch OS system does not have enough independent applications to reflect its advantages; Android wear has multiple brands and types of smart watches to choose from. It also has the problem of endurance, but it will give users more choices.